Later this week, the alleged final theatrical release directed by Steven Soderbergh will open nationwide. Titled Side Effects, it’s a fine little thriller involving psychiatry and the pharmaceutical industry. Maybe not the grandest finale for the filmmaker who gave us such big movies as the Oceans trilogy, Traffic, Che, Shizopolis and of course Sex, Lies and Videotape, but he didn’t enter the business with a bang either. Soderbergh’s first professional directing gig, at age 21, was helming a little-recognized concert film titled Yes: 9012Live, which presents a 1984 performance by the band Yes during their tour supporting the album 90125. (You can see a clip of them doing “Roundabout” from the film here.) Supplementary to that, he shot a short backstage documentary during the tour called Access All Areas. It’s a crude look at the reunited prog-rock group both aesthetically and content-wise. It’s quickly cut, offering only bits of moments rather than full-on scenes. And some of those little bits include band members mooning the camera, talking about needing to poop and putting their butts up to the microphone of Larry Blake, who would continue on as Soderbergh’s regular sound man for almost 30 years (through Magic Mike). And at the end of the film, everyone has false credits where Tony Kaye and Trevor Rabin are said to be known as “Jack Mehoff” and “Michael Hunt,” respectively. Who knew Yes was so childish?